Issue: Since enactment of the Affordable Care Act (ACA), many more women have health insurance than before the law, in part because it prohibits insurer practices that discriminate against women. However, gaps in women's health coverage persist. Insurers often exclude health services that women are likely to need, leaving women vulnerable to higher costs and denied claims that threaten their ec...

The Data Encryption Standard (DES) was developed by an IBM team around 1974 and adopted as a national standard in 1977. Since that time, many cryptanalysts have attempted to find shortcuts for breaking the system. In this paper, we examine one such attempt, the method of differential cryptanalysis, published by Blham and Shamir. We show some of the safeguards against differential cryptanalysis ...

I prove that the average number of comparisons for median-of-k Quicksort (with fat-pivot a.k.a. three-way partitioning) is asymptotically only a constant αk times worse than the lower bound for sorting random multisets with Ω(nε) duplicates of each value (for any ε > 0). The constant is αk = ln(2)/ ( Hk+1 −H(k+1)/2 ) , which converges to 1 as k →∞, so Quicksort is asymptotically optimal for inp...

Capgras syndrome is considered a rare syndrome in which the patient believes that a person usually a close relative, has been replaced by an exact double or imposter and maintains this false belief despite evidence to the contrary (Capgras and Reboul-Lachaux 1923). Capgras' syndrome has usually been described as a manifestation of schizophrenia. Some others (Vogel 1974, Hay man and Abrams 1977)...

As I leaf through my own "ACL (Historical)" file (which, I am frightened to observe, goes back to the Fourth Annual Meeting, in 1966), and focus in particular on 1977, when I was President, it strikes me that pretty much everything significant that happened in the Association that year was the work of other people. Don Walker was completing the mammoth task of transferring all of the ACL's reco...

In recent years, there has been concern in many sections of the community about the cost of housing in Australia. This is not the fi rst time that such concerns have surfaced: the 2003/04 Productivity Commission Inquiry on First Home Ownership was preceded by studies into housing issues in 1977–78 and 1990–92.2 But the current episode of high housing costs has been quite prolonged, and there ar...

The Crossognathiformes is an extinct fish order erected by Taverne (1989) to contain the crossognathids and the pachyrhizodontoids, and until recently, considered a typical Cretaceous taxon. However, recent studies of the group have shown that the Jurassic family Varasichthyidae is the sister group of pachyrhizodontoids plus crossognathids extending the range of the group to the Oxfordian in th...

Following treatment with a leukemogen, a variable length of time, from weeks to years, elapses before the onset of clinically apparent leukemia. The events occurring during this time are still a mystery, but as one approach to this problem we have been investigating the mechanism(s) whereby leukemogens modify the behaviour of the haemopoietic stem cells and the consequences of such alterations ...